Frequency modulator and frequency modulation method

Details Frequency modulator and frequency modulation method Frequency modulator and frequency modulation method

2008-07-22

2008-07-22

Kinkead, Arnold (Department: 2817)

Modulators

Frequency modulator

C322S100000, C322S100000, C455S102000, C455S112000, C455S110000

Reexamination Certificate

active

07403079

ABSTRACT:
A frequency modulation method is provided in which the frequency of a carrier signal is modulated on the basis of the frequency of a modulation signal, and in which the modulation signal is integrated. The carrier signal is integrated, and a differential signal is formed from the integrated modulation signal and the integrated carrier signal. The differential signal is phase-modulated in order to obtain the frequency-modulated carrier signal as the output signal.

REFERENCES:
patent: 4503405 (1985-03-01), Jordan et al.
patent: 6225864 (2001-05-01), Luu
patent: 31 13 800 (1982-03-01), None
R. Köstner et al., “Elektronische Schaltungen,” Carl Hanser, Verlag München Wien, pp. 246-247 (1993). (Translation provided).

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